1. 2-4. mineral (ore) deposits
Definitions
Ore: A type of rock that contains minerals with important elements including metals that can be extracted from the rock at a profit.
Gangue: commercially worthless material that surrounds, or is closely mixed with, a wanted mineral in an ore deposit.
Ore deposits: Ore accumulation. Parts of the crust, where ores are concentrated
Mining: Extraction of ores, or other valuable minerals from the ore deposits

2. 2-4-2. Types of Ore Deposits (based on the genesis)
Magmatic deposits
Metamorphically reworked deposits
Hydrothermal deposits
Sedimentary deposits
Weathering (residual) deposits
Placer deposits

3. Ore minerals